作为碱性膜燃料电池的核心部件，碱性膜（AEMs）的开发一直是该领域研究的重点与难点，但该类膜存在离子交换容量与机械性能间此消彼长的矛盾，及低离子电导率和差的化学稳定性等问题。交联结构可以提升膜尺寸稳定性，但电导率损失严重。本项目拟以稳定性较好的咪唑鎓盐为对象展开研究，以稳定性优异的聚苯并咪唑/聚乙烯基苄基氯为高分子骨架，通过在膜内“锚定”载有游离咪唑鎓盐小分子传导基团的晶体材料，利用固有孔道晶体规则在膜内构建丰富有序的离子传输通道，减少离子传输阻力，突破膜内共价结合的官能团数量限制，构建广泛高效氢键网络体系和离子传递通道，以提高膜的电导率及稳定性。然后，利用现代谱学显微技术、电化学方法及单电池测试手段，研究膜的微观结构、电化学特性及电池性能；并通过理论计算，研究大分子交联型AEMs中连续离子传输通道的构建与调控机制。本项目的完成将在分子水平上为高性能AEMs的开发提供实验依据和理论指导。

As the core component, anion exchange membrane (AEMs) has always been the focus and difficulty in the development of anion exchange membrane fuel cell (AEMFC). However, there are two severe challenges: the conflict between ionic exchange capacity (IEC) and mechanical properties and the conflict between ionic exchange capacity (IEC) and mechanical properties. Crosslinking structure can improve dimensional stability of AEMs, but the loss of conductivity is serious. This project aims to study the substitution of C4 and C5 imidazolium with good stability, and PBI/PVBC with excellent stability is used as the polymer framework. And by "anchoring" the crystalline materials containing small molecular conducting groups of imidazolium salts in AEMs, abundant and orderly ion transport channels are constructed in the membrane by using the inherent channel crystal rules to reduce the ion transport resistance. And then, the microstructure, electrochemical characterization and cell performance of composite AEMs are researched by spectroscopy, electrochemical technology and single cell test. Besides, through theoretical calculation, the construction and regulation mechanism of continuous ion transport channel in macromolecular crosslinked structure will studied. Based on this project, it provides experimental support and theoretical guidance on the design of high-performance AEMs, promoting the development and application of AEMFCs.